<!DOCTYPE html>
<html xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport">
</head>
<body>
<div layout:fragment="left">
    <aside class="main-sidebar">
        <section class="sidebar">
            <!--功能菜单-->
            <ul class="sidebar-menu" data-widget="tree">
                <li class="header">功能导航</li>

            </ul>
        </section>
    </aside>
</div>
</body>
</html>